How to wrap paragraph text in an image

[Ofnuts]

Typically a job for a typesetting application such as Scribus.

With Gimp, a bit more labor intensive using the text tool:

• Create the beginning of your text, and without leaving the text tool, move it over the shape (you can use Alt-Ctrl-Drag for this).
  
• In the Tool options, set the box to "fixed", and make the box be a good fit for your shape (note that there will be asmall margin between the edge of the text and the box)
  
• It can be useful to set the text as "Centered" in tge Tool options
  
• Enter the text, making lines that are close enough to the required length
  
• Using the on-canvas control to increase/decreae kerning in each line of text as required to make it fit. For small adjustments, you can select just the spaces